摘要
首先研究了四极观测系统装置系数与电极埋深的关系;然后给出了点电流源在3层地壳模型的地表和第二层时,电源所在层的电位的解析表达式;最后将天津宝坻地区的电性结构简化成一个3层模型,计算给出了当地表层和基岩中的电阻率出现变化时,在地表和基岩上层开展四极地电阻率观测结果与供电极距和深度的关系.
At first,the relation between the coefficient of electrode arrangement and the depth of buried electrodes for a four-electrode resistivity monitoring system is given in this paper. Then,the electrical potentials of the layers,in which the source electrode is buried in a three-layer earth model,are presented. Based on the resistivity profile at Baodi station in Tianjin,we have calculated the variation of apparent resistivity with different intervals between two source electrodes and depths of buried electrodes,when the resistivity of the surface layer or the rock layer has changed.
出处
《地震学报》
CSCD
北大核心
2010年第1期33-40,共8页
Acta Seismologica Sinica
基金
天津市科技支撑计划重点项目<天津及周边地区地震中短期预测技术研究>(07ZCGYSF03100)资助
关键词
深埋电极
装置系数
电位
视电阻率
buried electrodes
coefficient of electrode arrangement
electrical potential
apparent resistivity
